Dredge-bucket.



DREDGE BUCKET. APPLICATION FILED APR. 19, 1916.

INVE/l/TOM I 2 SHEETSSHEET 1.

Patented 0%.24, 1916.

WITNESSES 0 z Q77Mw% ATTORNEYS- E. G. SHAFFROTH.

' DREDGE BUCKET.

APPLICATION FILED APR. 19, 1916'.

Patented (m. 24,1916.

2 SHEETS-SHEET Z.

% W/I/VESSS ERNEST GODFREY sI-iAFFnoTH, or'KstLisPELL, Montana.

DREDGE-BUCKET.

moaaaa.

Specification of Letters Patent.

Patented @ct. 24, 191W.

Application filed April 19, 191.6. Serial No. 92,164.

To all who met may concern:

Be it known that I, ERNEST G; SHAFF- Born, a citizen'of the UnitedStates, and a resident'of Kalispell, in the county of Flathead and Stateof Montana, havevinvented afnew and Improved Dredge-Bucket, of

which the following is a full, clear, and exact description. V

. My invention has for its object to provide a dredge'bucket'which maybe operated by a single line, and which automatically opens and closesat the proper time; the construction is' such that there is nodanger ofthe bucket opening until it reaches a predetermined height, and there isno danger of the bucket closing except at the place desired. Additionalobjects ofthe invention will appear in the following specification inwhich the preferred form of the invention is described. p I

In the drawings'similar reference characwhich' j Figure 1 isfa sideelevation of my inventers denote similar parts in all the views, in

tion showingthe hoop in section; Fig. 2 is "a View similar -totli'at'shown in Fig. 1, but

with the parts in the position which they assume when thebucket jawsareo pened before the bucket is lowered ,Fi-g. 3 is a view similar tothose shown in-Figsi '1 and 2, but with the bucket jaws at the groundand the parts in position to close the"- bucket jaws as the bucket israised; Fig.4 a sectional View on the line 14 of Fig. 1; Fig-5 is anenlarged sectional view on the line 5- 5 of Fig. 6;

and Fig. 6 is an enlarged sectional view on p the line 66 of Fig. 5. v

The bucket is constructed'with acvertical frame, two sleeves beingslida'bly mounted on this frame, arms on the bucket jaws beingpivotally' connected at their inner ends to one of the sleeves, and attheir outer ends to the other sleeve, so that the bucket jaws may beoperated by sliding one sleeve on the frame relativelyto the other; Whenthe bucket is lowered, thesleeves will be dis posed one above the other,and be support- I ed by a stop on the fra'me,.'which holds the bucketaws open; but when the bucket aws come in contact with the bottom theirdownward movement will be interrupted, although the vertical frame willcontinue to descend relatively to the bucket faws and bucket jaws.

.the bucket jaws.

sleeves until another stop on the vertical 7 to the frame and the lowersleeve, to open- As a means for holding the bucket jaws down when theupper sleeve is moved upwardly by the catches on the frame andrelatively to the lower sleeve, provide the vertical frame with bearingsin which a shaft is journaled, drums being secured to this shaft ononeof which the lifting line is wound in one direction, cords beingsecured'to the lower sleeve and bein'g -movement of the upper sleeverelatively wound around theother drums in the'op posite direction, sothat when the lifting lme'is drawn tight at the commencement of. theupward movement it will rotate the.

the lower sleeve downuntilit is engaged by the lower stop on thevertical frame.

Having briefly described the construction and operation of theinvention, Ifwill now 1 describe in greater detail the construction, andwilLpoint out in' the specification, the

different elements referred to. By referringto the drawings, it will beseen that a-vertical frame is provided having two members 10 spaced aart. Slidably mounted on the frame members 10 there is a sleeve 11having depending armsi12 connected at their lower ends bv a head 13 towhicliare pivoted the inner ends 14 of arms 15 which extend from bucketjaws 16. slidably mounted on the depending arms 12. of

thesleeve 11 there is a second sleeve 17 which is connected with theouter ends'18 of the-bucket jaw arms 15, by links 19. The links 19 areof such a length that when the sleeve 17 is supported by stops 20andjthe sleeve 11 rests on the sleeve 17, the bucket jaws 16 will be inopen position, as illustrated in Fig. 2 of the drawings, but when thesleeve 1 1 is raised relatively to the sleeve j 80 shaft to wind up thecortls thereby holding i f limit the movement. f e r th ese catches 34being so; weighted that they 165 w ll operatively engagejthe members 11on frame members in which ashaft 23 is .jonrnaled, this shaft 23 beingalso journaled in bearing members 24 which are slidably 10 disposed inguideways 25 in the depending arms 12 of the sleevell. Disposed between"the frame members IO'there is a drum 26 which is-secured to the shaft23, there being additional drums 27 which are secured to the shaft. 23-at the outer sides of the bear- "ingmembers 24. A lifting line 28 is.dis posed down between rollers 29 at the upper portion of the framemembers 10, this lifting line extending'through an opening 3Q in .20 oneof the stops20,- and being wound around the drum 26 in one direction,and being secured thereto,there being cords 31 which.

are secured to the sleeve 17 and which'are' This is doneso that when thefting line 28 starts tolift the vertical if'rame, it will rotate thedrum '26, by means direction.

of which the drums 27 will be rotated to draw down on the cords 31 andthereby QOQhold the sleeve 17 substantially stationary while the frameand the sleeve 11 are raised relatively'thereto. This means isProvidedso that the bucket-jaws 16 will close in such fa manner as topbtain the best results. By

referring to Fig. 4 of'the drawings, it will {sleeve 11 have'guideways32in which the frame members 10 are disposed.

When the bucket is lowered, the parts will is, the sleeve 17 will reston the stops and the sleeve 11 will rest on the's1eevef1'7, the bucketjaws 16 being openwhen the: sleeves 11 and 17 are in the said positionrelatively to the frame members.;-10, which: position they will retainuntil the -bujck e 't jaws 16 ward movement of :the bucket jaws will beinterrupted, while the weight'of the frame members 10 will permit theframe "to "de scend relatively to the sleeves "11; and 17 to 1 the;position illustratdfflTlie framemem: bersdescend relatively to thesleeves '11, and 555 .17 until the upper' sleeve is disposedcat, i l" clp ity "testers 513m as jrame members .10, catches 34 gbeingdienlgin"cut-away portions ,37 in the; catches 34 j to the said catches,

- woundaround the drums 27 in the opposite the sleeve 11 when-the sleeve11 reaches a position adjacent the stops 33 on the frame members 10.-The sleeve. 11 will by this means be temporarily secured againstmovement relatively to the frame members 10, so

Y that'when' the lifting line 28 is raised to lift the bucket, thesleeve 11 will move upwardly with the frame members 10 and the sleeve 17will be held substantially in a stationary position during the firstpart of this upward movement because of the winding of the cords 31 onthe drum 27, which will be ing line 28 from the drum 26 in the mannerwhich has been described. However, until the frame members 10 have movedup sufficiently far to carry the sleeve 11 a sufficient distance fromthe sleeve 17 to close thereby freeing the sleeve 11 therefrom, it

being understood that the boom 41 will first be moved to a position overwhich the contents of the bucket are to be deposited.

* Whenthe upper portions 34 of the catches be seen ':that 'the dependingarms 12 of. the

said sleeve 11 will fall to the position illustrated in Fig. 2, therebyopening the bucket 40f be in the position illustrated in Fig; 2, thatjaws 16.

Having thus described my invention, I. claim as new and desire to secureby Let-' ters Patent:

1. In a, device ofthe class described, a

frame, a member movably mounted 'on the v frame andhaving dependingarms, a secreach the ground, as illustrated in Fig. 3

of the drawings, when the further downondfmember movably mounted on theframe member'and the bottom of the depending arms, bucket jaws,pivotalmeans connect ing the bucket jaws with thearms of the first member,additional pivotal means at the bucket jaws connecting the bucket j a-ws-W ith' thesec'ond member, and a catch ad ..jacent the top of the framefor supporting '.'the first member, the catch having an opi jeratingportion positioned to be struck by position to engagemembers1l1of=tliefsleeveI 11. 1 These -ca-tches"- .34 are"pi'votedr.-to theframe members 10'-Iat'3 5,' the're beingpiiis 36: Y? in the framemembers-1'10, which g nove inaii overheadlm'ember as' the bucket israised to operate the catch, thereby frecing the 2. In a device of-theclass described, a

' erticali frame, two sleeves slidable on the enter portions oftheibucket jaws with one brought about by the unwinding of the liftframebelow the of the sleeves, additional pivotal means connecting the bucketjaws with the other sleeve, and a catch for holding the last sleevespaced above the other sleeve.

3. In a device of the class described, a

vertical frame, two sleeves slidableon the frame, a stop on the framebelow the sleeves, bucket jaws, pivotal means connecting the outerportions of the bucket j'aws with one of the sleeves, additional pivotalmeans connecting the bucket jaws with the other sleeve, a catch on theframe for. engaging one of the sleeves to hold the latter spaced fromthe-other sleeve, and means for engagement-by' the catch for operatingthe latter as the frame is raised to permit thesleeve held by the catchto fall and thereby open the bucket jaws.

4. In a device of the class described, a vertical frame, two sleevesslidable on the frame, a stop on the frame below the'sleeves, bucketjaws, pivotal means connecting the outer portions of th'ebucket jawswith one of the sleeves, additional pivotal means connecting the bucket.jaws with, the other sleeve, 'a catch on the frame for holding one ofthe sleeves spaced from the other sleeve,

a hoop, and a line secured to the frame and extending through the hoopfor bringing the catch into engagement with the hoop,

thereby operating the catch to free the sleeve held thereby when theframe is raised by the line. i Y

5. Ina device of. the class described, a verticalframe, two sleevesslidable on the frame relativelyto each other, a' stop on the sleeves,bucket aws,

pivotal means connecting the bucket jaws with one of the sleeves,pivotal means spaced from the first pivotal means at the bucket jaws andconnecting the bucket jaws with the other sleeve, bearings in the frame,a

shaft journaled in the bearings, two drums secured to the shaft, asupporting line wound in one direction around one of the drums, a cordwound in the other direction around the other drum and secured to asleeve, and means for holding the other sleeve spaced from the lastmentioned sleeve.

6. In a device of the class described, a vertical frame, two sleevesslidable on the frame and relatively to each other, a stop on theframebelowthe sleeves, bucket jaws, pivotal means connecting the bucket jawswith one of the sleeves, additional pivotal means spaced from thefirst'pivotal means at the bucket jaws connecting the ,,bucket jaws withthe other. sleeve, a catchon the: frame for engaging one sleeve to holdthe latter spaced from the other sleeve, and means for engagement by thecatch to open the latter and free the: sleeve supported by the catch.

7. In an article of theclass described, a vertical frame,, a sleeveslidable on the frame and having depending arms, bucket aws havinginwardly extending arms pivoted to the depending arms, a second sleeveslidable upon the depending arms,'

links connecting the second sleeve with the bucket jaw arms, astop-onthe frame below the second sleeve, and means for holding thefirst sleeve spaced above the second sleeve.

8. In, an article of the class described,- a

vertical frame, a sleeve slidable on the frame and having dependingarms, bucket aws hav ng mwardly extending arms pivoted to the dependlngarms, a second sleeve slidable on the depending arms, links verticalframe having bearings, a sleeve slidable on the frame andhavingdepending arms,-bucket jaws having inwardly extending arms pivoted tothedepending arms, a second sleeveslidable on the depending arms, linksconnecting the second sleeve with the bucket jaw arms, a stop on theframe below the second sleeve, means for holding the first sleeve spacedabove the second sleeve, a shaft journaled in the beare, two drums, alifting line disposed around one of the drums in one direction.

and secured to the said franie, and a cord secured to the second sleeveand disposed around the other drum the other direc- 10.-In an article ofthe class described, a

vertical frame having bearings, a sleeve slidable on the frame andhaving depending arms, bucket jaws having inwardly eX- tending armspivoted to the depending arms,

a secondsleeve slidable on the depending arms, links connecting thesecond sleeve with the bucket jawarms, a stop on the frame below thesecond sleeve, a shaft journaled in the bearings, two drums, a liftingline disposed around one. of the drums in one direction and secured tothesaid frame, a cord secured to? the: second sleeve and disposed aroundthe other drum .ii'1-the other direction, a hoop through which thelifting line extends, and a catch 'on .the frame adapted to be operatedby engagement with the hoop, the catch normally. holding the firstsleeve spaced above the second sleeve.

.11. In an article of the class described,

a frame,-a member movably mounted on the frame-,and having-dependingarms,fa secondmember movably mounted on the frame be tween the top ofthe body of the first memher and the bottom of its said arms, the sec-'ond member being adapted to limit the downward movement of the-firstmember,-

bucket jaws, pivotal means connecting the "bucket jaws with oneofthe'members, additional pivotal 'means spaced from the first I pivotalmeans at the bucketjaws, connecting the bucketjaws with the othermember, a

I stop on the frame for limiting the downward movement of the secondmember, and

'a catch adjacent the top of the'frame for supporting the first member,the catch being positioned to be struck by anoverhead member as the;bucket is pose specified.

12. In an article of the described,-

a frame having two vertically extending gmembers spaced apart, atransverse shaft journaled in bearings in the fr ame-members, a drumdisposed between the frame members and secured to the. -shaft,additional drums secured to the shaft at the outer sides of the I framemembers, transverse members I spaced i J apart'and. connecting the upperportionsof X down between the transverse members and the framernembers,a lifting line extending wound in-j'one' direction around I the "firstdrum, a sleeve slidable on the frame memi hers, cords secured tothesleeve and wound .0 tional drums, bucket ]fl.WS, an additional 7' Ibers, means connecting the bucket jaws with the first sleeve, meansspacedfriom; the first in lthe other direction around the addisleeveslidably mounted on the frame memsleeve at the bucket jaws connectingthe bucket jaws l with the second; sleeve; and

means on the frame; for holding the second I drum disposed betweenv theframe members and secured to the shaft, additional drums securedtotheshaft at the outersides of'the frame members, transverse members spaced':,apart' and connecting the upper portions of the frame members, aliftingline-extending down between the transverse members and wound inone direction around i the first-v 1drum,.'a" sleeve slidable' on the,frame mem-',

1 ber's cords secured'to the sleeve and wound in'the other directionaround the additional drums, bucket jaws, an additional' sleeve disposedabove the first sleeve andhaving depending arms extending dbwn withinthe first sleeve, means connecting the bucket 'jawswiththe first sleeve,means spaced-from the; first means at the bucket jaws connecting Tthe-bucket jaws with the second "sleeve, and

3 means onthe frame for' holdingthe'second sleeve spaced above the firstsleeve;

' 14.111 a] device at fthe class described, a,

I frame having two vertically extendingmem raised for the pur- ,naled inhearings in the frame members, a

drum disposed between the frame members and secured to the shaft,additional drums secured to the shaft at the outer sides of the framemembers, transverse members spaced apart and connectingtheiiipperflportions of the frame members, a" lifting line' extendingdown-b etwen the transverse members and wound in one direction aroundthe. firstvdrum, a sleeve slidable on the frame members, cords securedto" the sleeve' and wound in the other direction-around the additionalposed above the first' sleeve and having de-' pending arms extendingdown within the first sleeve, means connecting the bucket jaws with thefirst sleeve, means spaced from thefirstmeans at the bucket jawsconnecting the bucket 'jaws with the-second sleeve, catches on the framefor holding the second sleeve spaced above the first sleeve, and a hoopthrough-f which the lifting line drums, bucket jaws, an additionalsleeve disextends, the "hoop being adapted to engage and-operate thecatches for freeing the seco nd mentioned sleeve therefrom.

frame and having dependin farms, a sec-' ond member movably mounted onthe frame between the topof the body of the first mem-' her and thebottom of its said arms, the sec ond "member being adapted to limit Tthe downward movement. ofthe first member,-

bucket jaws, pivotal means connecting the bucket jawswith one of themembers, additional pivotal means spaced from the first pivotal means atthe bucket jaws, connect 9o 15. 'In an article-of the class described,a' frame, a member movably'mounted on the I ing the bucket jaws with theother member,

a stop 'on the" frame for limiting the .downward movement of the-fsecond member, .a catch adjacent the top of the frameforsupportingthefirst member, the catch being positioned to be struckby'an'overhead meml beri as the bucket is raisedforthe purpose-specified, "a lifting, line connected with the frame, and means inconnection with the lifting" line for drawing down the second member, aainst: thestop.

16.. n a device of the class'described, a vertical frame, hoisting"means [Secured to the frame, a: sleevefslidable came frame and havingdependinglarms, bucket, jaws having inwardly extending arms pito'ted tothe depending arms, a seeond'sleeve slidable on I the dependingarms,*liiik sj connecting the secondsleeve with thebucket jawarms,-astop I on the frame below the' v'es, means for a above the'secdis'posed'above the holding-the first sleeve spa 0nd sleeve, and m ans frame forengagement] by, the first means asthe frame is raised'to'free the firstmeans vertical frame, a sleeve s lidable on the frame and havingdepending arms, bucket jaws 17,.In a device of the class described, a

bers spaced apart, a transverse shaft jour-Q having inwardlyextendingarms free from-13n the frame and pivoted to the depending In testimonywhereof I have signed my arms, .a second sleeve slidable on the framename to this specification'in the presence of and relatively to thefirst sleeve, links 'contwo subscribing Witnesses.

necting the second sleeve With the bucket jaw arms, a stop on the framebelow the sec- -Witnesses: 0nd sleeve,- and means for holding one sleeveLESLIE S. BUGBEE, spaced above the other sleeve. 7 'FGERTIE DAVISON.

ERNEST GODFREY SHAFFRO'IH.

